S-94579A780 1/4"-28 Weld Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Superior welding stability due to rectangular base design providing increased surface contact and preventing rotation during installation
• Space-saving low profile barrel design (1/16" height) ideal for applications with limited clearance requirements
• Precise thread engagement with Class 2B fit ensuring reliable, vibration-resistant connections in critical assemblies
• Optimized for 5/16" mounting holes for quick alignment and streamlined welding operations
• Fine UNF threading (1/4"-28) delivers higher tensile strength and better load distribution compared to coarse threads
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This rectangular weld nut solves critical challenges in metal fabrication and structural assembly where zinc-plated steel provides essential corrosion protection while maintaining weld integrity. The low profile barrel design minimizes protrusion in confined spaces, making it ideal for automotive frames, machinery enclosures, and electrical cabinet manufacturing. With 1/4"-28 UNF fine threading, it maintains superior clamp load under vibration, preventing loosening in dynamic applications. The rectangular base prevents spin-out during welding operations, reducing installation time and improving joint reliability. These engineered features make it particularly valuable for industrial welding applications requiring consistent performance in demanding environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit per UNF specifications, ensuring consistent threading compatibility. The 19/64" barrel diameter and 13/16" base length provide optimal welding surface area. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material traceability. Right-hand fine thread spacing maintains ASME/ANSI standards for unified national fine threads in inch-system applications.